(19)
(11) EP 3 420 046 A1

(12)

(43) Date of publication:
02.01.2019 Bulletin 2019/01

(21) Application number: 17716752.5

(22) Date of filing: 31.03.2017
(51) International Patent Classification (IPC): 
C09K 8/03(2006.01)
C09C 1/42(2006.01)
(86) International application number:
PCT/US2017/025253
(87) International publication number:
WO 2017/173207 (05.10.2017 Gazette 2017/40)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 01.04.2016 US 201615088990

(71) Applicant: Saudi Arabian Oil Company
31311 Dhahran (SA)

(72) Inventors:
  • AL-SHAFEL, Mansour, A.
    Dhahran 31311 (SA)
  • ALFLIOW, Akram, A.
    Dhahran 31311 (SA)
  • AL-MOFLEH, Awad, M.
    Dhahran 31311 (SA)
  • AL-AAMRI, Jamal, M.
    Dhahran 31311 (SA)
  • AZAIDI, Syed Rehan, Ahmad
    Dhahran 31311 (SA)
  • AL-TUWAILIB, Amer, A.
    Dhahran 31311 (SA)

(74) Representative: Dauncey, Mark Peter 
Marks & Clerk LLP 1 New York Street
Manchester M1 4HD
Manchester M1 4HD (GB)

   


(54) MODIFICATION OF BENTONITE PROPERTIES FOR DRILLING FLUIDS